This is what happens when you don’t have a QA department. :p
Sorry everyone. I upgraded WordPress and a bunch of plugins a few weeks back, and didn’t realize the reCAPTCHA plugin changed providers, and has been marking all comments as spam since then. I went through the spam backlog and recovered anything obvious. Though just to make sure, I’m going to dig through any tertiary settings and make sure legit email addresses haven’t been identified as spam sources. Just so I don’t have to worry about approving every comment, even from pre-approved submitters.
I know this affects, at most, two or three people that actually visit this site occasionally, but now those people are happy. Or at least less annoyed. :)